JP2844127B2 - Single-row pile foundation method for base-isolated buildings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-row pile foundation method for a base-isolated building, particularly when a base-isolated building is built up over a narrow site. ,

[0002]

2. Description of the Related Art As shown in FIGS.
Pile b is laid in a grid in the area of the bottom of building a to be constructed,
Generally, a foundation c and a building a are constructed in a cubic shape on the pile b. However, in an urban area, it is natural to construct a building in close proximity to a building adjacent to a narrow site, and in this case, the conventional construction method is extremely difficult to perform construction, and the construction efficiency is greatly reduced. was there. In addition, particularly in densely populated areas of the city, minimizing disasters caused by earthquakes is a major issue, and as a result, seismic isolation of buildings has become an inevitable trend.

[0003]

SUMMARY OF THE INVENTION In view of the above situation, the present invention has been made to solve the above-mentioned problem, and is intended for a case where a building is constructed close to an adjacent building in a narrow site. The purpose of the present invention is to provide a single-row pile foundation method for seismically isolated buildings that reduces the shaking of buildings during an earthquake and minimizes disasters while improving workability at the site.

[0004]

In order to achieve the above-mentioned object, the present invention relates to a single-row large-diameter pile, which has been cast in place at a predetermined interval, is connected by a connecting beam, and is connected to the connecting beam by an inverse footing type. In addition to constructing a continuous foundation along the row of piles, constructing an underground retaining wall on the outer periphery of the upper surface of the continuous foundation, and constructing a seismic isolated building with a seismic isolation device interposed between the upper surface of the continuous foundation and the inner surface of the retaining wall It is characterized by a single-row pile foundation method for earthquake buildings.

[0005]

Therefore, according to the present invention, since the pile foundation is not constructed close to the building on the adjacent land, the construction is easy to carry out, troubles during construction with the adjacent land are avoided, and disasters of the building during an earthquake are minimized. Can be stopped.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below step by step with reference to the drawings. 1) In the present invention, first, a single-row large-diameter pile 1 is cast into place at a predetermined position in the center of a site at a predetermined interval by a known method with the pile head at a predetermined depth below the ground surface. 2) Next, a mountain retaining work is performed on the bottom area of the building with one row of the large diameter piles as the center, and the entire area is dug up to the pile head. 3) After digging down to the pile head, the pile head of the single-row large-diameter pile 1 is connected with the connecting beam 2. 4) Next, an inverse footing-type continuous foundation 3 is constructed along the connecting beam 2. 5) Next, an underground retaining wall 4 is constructed on the outer periphery of the upper surface of the continuous foundation 3 inside the mountain retaining work. 6) Finally, the seismic isolation building 6 is constructed by interposing the seismic isolation device 5 on the upper surface of the continuous foundation 3 and the inner surface of the retaining wall 4, and the seismic isolation building by the single row pile foundation method is completed.

[0007]

As described above, according to the present invention, the pile head of a single row large diameter pile piled in place at a predetermined interval is connected by a connecting beam, and an inverted footing type continuous foundation is integrally formed with the connecting beam. In addition to building along the rows, constructing an underground retaining wall on the outer periphery of the upper surface of the continuous foundation and constructing a seismic isolation building with a seismic isolation device interposed between the upper surface of the continuous foundation and the inner surface of the retaining wall, Since the building is not constructed close to the neighboring building, the construction is easy to perform, troubles during construction with the neighboring land are avoided, and the disaster of the building during the earthquake is minimized. In addition, since the reverse footing type continuous foundation only needs to prevent uneven settlement, it is possible to reduce the construction cost, and also to prevent uneven settlement on soft ground compared to solid foundation. And the like.

[0008]

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a base-isolated building constructed by the method of the present invention.

FIG. 2 is a plan view of a continuous foundation part of the same method.

FIG. 3 is a vertical sectional side view of a building by a conventional pile foundation method.

FIG. 4 is a plan view of a foundation part of the same method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Large-diameter pile 2 Connecting beam 3 Continuous foundation 4 Underground retaining wall 5 Seismic isolation device 6 Seismic isolation building

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E02D 27/34 E02D 27/12 E04H 9/02 301 E04H 9/02 331

Claims (1)

(57) [Claims] 1. A pile head of a single row large diameter pile piled in place at a predetermined interval is connected with a connecting beam, and an inverse footing type continuous foundation is integrally formed with the connecting beam along the pile row.
A single-row pile foundation method for a base-isolated building, wherein a basement retaining wall is constructed on the outer periphery of the upper surface of the continuous foundation, and a seismic isolation building is constructed by interposing a seismic isolation device on the upper surface of the continuous foundation and the inner surface of the retaining wall. .